#include "irphase_t.h"
#include "iredges_t.h"
+#include "statev.h"
+
#include "beirg_t.h"
#include "besched_t.h"
+#include "belive_t.h"
/**
* Check dominance of two nodes in the same block.
{
int a2b = _value_dominates(a, b);
int b2a = _value_dominates(b, a);
+ int res = 0;
+
+ stat_ev_ctx_push("beintlive");
+
+ /*
+ * Adjust a and b so, that a dominates b if
+ * a dominates b or vice versa.
+ */
+ if(b2a) {
+ const ir_node *t = a;
+ a = b;
+ b = t;
+ a2b = 1;
+ }
/* If there is no dominance relation, they do not interfere. */
- if((a2b | b2a) > 0) {
+ if(a2b) {
const ir_edge_t *edge;
- ir_node *bb;
+ ir_node *bb = get_nodes_block(b);
- /*
- * Adjust a and b so, that a dominates b if
- * a dominates b or vice versa.
- */
- if(b2a) {
- const ir_node *t = a;
- a = b;
- b = t;
- }
-
- bb = get_nodes_block(b);
+ stat_ev_dbl("beintlive_ignore", arch_irn_is(lv->birg->main_env->arch_env, a, ignore));
/*
* If a is live end in b's block it is
* live at b's definition (a dominates b)
*/
- if(be_is_live_end(lv, bb, a))
- return 1;
+ if(be_is_live_end(lv, bb, a)) {
+ res = 1;
+ goto end;
+ }
/*
* Look at all usages of a.
*/
foreach_out_edge(a, edge) {
const ir_node *user = get_edge_src_irn(edge);
- if(get_nodes_block(user) == bb && !is_Phi(user) && _value_strictly_dominates(b, user))
- return 1;
+ if(get_nodes_block(user) == bb && !is_Phi(user) && _value_strictly_dominates(b, user)) {
+ res = 1;
+ goto end;
+ }
}
}
- return 0;
+end:
+ stat_ev_ctx_pop("beintlive");
+ return res;
}